Stabilities of 7, 7, 8, 8-Tetracyanoquinodimethane Salts of Polycation Polymers

Abstract

The correlations between the stabilities of 7, 7, 8, 8-tetracyanoquinodimethane (CQ) salts of polycation polymers and their electric conductivities were studied to elucidate the decomposition reaction of CQ salts. The specific resistance (P) of polycation-CQ salts changed as follows in an air: p: CQ simple salt>CQ complex salt Solution>Solid state. The results of electronic spectra showed that the stabilities of CQ salts related to the decomposition of CQ anion radical (CQ') and to that due to water. On the basis of the chemical analyses of the isolated decomposition products, CQ was found to change into ce, a'-dicyano-p(cyanocarbony1)-a-toluenide (DCT-). As a result of the decomposition of CQ, the electric conductivities of polycation-CQ salts decreased not only with losing unpaired electrons, carrier of electricity, but also with disintegrating conduction paths.